Makita XDT08 18V LXT Lithium-Ion Brushless Cordless Impact Driver Kit (Discontinued by Manufacturer) Efficient BL Brushless motor is electronically controlled to optimize battery energy use for up to 50-Percent longer run time per charge The BL Brushless Motor eliminates carbon brushes, enabling the BL Motor to run cooler and more efficiently for longer life The electronically-controlled BL Brushless Motor efficiently uses energy to match torque and RPM to the changing demands of the application Compact design at only 5-7/8-Inch long and weighs just 3.4-Pound. for reduced operator fatigue Star Protection Computer Controls